Heater



FIG. 1 is a front elevational view of a heater, showing our new design;

FIG. 2 is a front elevational view of the heater with the door open;

FIG. 3 is a front elevational view of the heater with the door removed;

FIG. 4 is a front elevational view thereof a screen over the opening;

FIG. 5 is a right side elevational view of the device as shown in FIG. 1;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a top plan view thereof;

FIG. 9 is a rear elevational view thereof. 

The ornamental design for a heater, as shown and described. 